I did find this tidbit in the link I posted to be interesting. It states:
"Any short run river ( IE Vedder, Harrison ) White chinook ,,, are called " Tuley whites, originated in the Columbia river lower streams. They are very acid smelling and tasting. Long river whites are every bit as good as the Reds but just don't look as nice. Upper Fraser whites and reds 600-700 mile fish are fine. Stay above the Harrison and most of the kings are fine."
So, if I understand this correctly, even the Harrison whites are introduced and originated from the Columbia system? Is this correct or speculation? Also, if correct, it kinda throws my thoughts at the back of my head out, as I speculated about genetics and "more correct" fish to introduce to systems, based on being at least from the same catchment basin.
When I did fish the Fraser quite a bit for Springs in the 90's, I did find I caught whites above the Harrison, and they were exceptional, such as whites I caught on the Island out of the NitNat or the Stamp.
Dano